The American Conservative Union Foundation, the main group on the right that rates members of Congress’ voting records, has come out in opposition to legislation that would privatize a key federal responsibility: air traffic control. The group said Thursday that the proposed legislation, dubbed the 21st Century Aviation Innovation, Reform, and Reauthorization Act, didn’t go far enough in making it a private entity.

In a statement, the ACUF said that the bill had “some aspects” that were good but that “it misses completely when it comes to the actual transfer of power from public to private hands. Specifically, private enterprises would not be allowed to compete for ownership of the newly created entity.”